Thanks. It turns out that the console.log(user) was supposed to be console.log(currentUser). I didn’t make any changes to it because I thought whatever I copied from the Github should be the right code to use. Next time I know! Thank you again.
yep, now I also found that this was the problem 
Okay so I followed through all the videos, now I am back to building the frontend dapp to call a function of my contract. I saw in the Moralis docs and also another post in this forum that @Yoomoo recommended to use the Moralis.execute code.
Here’s the code I found in the docs:
const ABI = [
{
constant: true,
inputs: [
{
internalType: "address",
name: "owner",
type: "address"
},
{
internalType: "address",
name: "spender",
type: "address"
}
],
name: "allowance",
outputs: [
{
internalType: "uint256",
name: "",
type: "uint256"
}
],
payable: false,
stateMutability: "view",
type: "function"
}
];
const options = {
contractAddress: "0xe...56",
functionName: "allowance",
abi: ABI,
params: {
owner: "0x2...45",
spender: "0x3...49"
},
};
const allowance = await Moralis.executeFunction(options);
Since I have the abi of the contract code in another js file from when I followed the Serverless dapp videos, I modified the codes a little. Please take a look:
const claimRewards = {
contractAddress: "0xb48D1488266F636dB97597875dE305Bb981EC5a5",
functionName: "claimRewards",
abi: window.abi,
params: {
// I don't know what to set for params because the function is claimRewards.
// It simply calls the contract to send the rewards to the connected wallet.
}
};
const allowance = await Moralis.executeFunction(claimRewards);
I’d appreciate any help I can get with this!
You could try to use it without params.
An example without params.
Thanks for the super fast response!
I got this error in the console:
Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'find')
at module.exports (moralis.js:26832)
at Function.<anonymous> (moralis.js:5871)
at tryCatch (moralis.js:25921)
at Generator.invoke [as _invoke] (moralis.js:26151)
at Generator.next (moralis.js:25976)
at asyncGeneratorStep (moralis.js:25368)
at _next (moralis.js:25390)
at moralis.js:25397
at new Promise (<anonymous>)
at new Wrapper (moralis.js:28450)
I am using a Moralis server on Ganache, deployed smart contract to Ganache. I changed my code to this:
async function claimBudsRewards(){
const web3 = await Moralis.enable();
const contract = new web3.eth.Contract(window.abi, "0xac5FB3Ac3De96470C612CeDBcE80EB42b1f5C0e7");
const Rewards = {
contractAddress: "0xac5FB3Ac3De96470C612CeDBcE80EB42b1f5C0e7",
functionName: "claimRewards",
abi: window.abi,
};
const BudsRewards = await Moralis.executeFunction(claimBudsRewards);
}
Thank you again!
You may want to use:
async function claimBudsRewards(){
const Rewards = {
contractAddress: "0xac5FB3Ac3De96470C612CeDBcE80EB42b1f5C0e7",
functionName: "claimRewards",
abi: window.abi,
};
const BudsRewards = await Moralis.executeFunction(Rewards);
}
I got a ‘missing web3 instance’
so I added the line back in:
async function claimBudsRewards(){
const web3 = await Moralis.enable(); // added this line back in
const Rewards = {
contractAddress: "0xac5FB3Ac3De96470C612CeDBcE80EB42b1f5C0e7",
functionName: "claimRewards",
abi: window.abi,
};
const BudsRewards = await Moralis.executeFunction(Rewards);
}
It worked! Thank you for guiding me through this. I’m new to all this and coding scared the crap out of me. But thanks to you guys, I’m actually enjoying this quite a bit now. Can’t wait to come back and show y’all the results!
1 Like
Hey I m also going through same problem I call the totalSupply function from my bsc contract for that I have to apply execute or run contract?
And I want to show the total supply in my console
both Moralis.executeFunction and runContractFunction should work
an example:
ERC20_ABI = [
{
constant: true,
inputs: [],
name: "totalSupply",
outputs: [{ name: "", type: "uint256" }],
payable: false,
stateMutability: "view",
type: "function",
},
];
x = await Moralis.Web3API.native.runContractFunction({
chain: "avalanche",
address: "0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7",
function_name: "totalSupply",
abi: ERC20_ABI,
})
thats my main js file , i want to read totalsupply from my contract which is on mainnet bsc…
and print it on my console ,
login = async () => {
Moralis.Web3.authenticate().then(function (user) {
console.log(user.get('ethAddress'))
})
}
async function cptsupply() {
const web3 = await moralis.enable();
const options = {
chain: "bsc",
address: "0x28e4f32fa7e842ad0a6e530bb6b4ec03b36d5078",
function_name: "totalSupply",
abi: window.abi,
};
const allowance = await Moralis.runContractFunction(options);
console.log(allowance);
}you can look at the above example that I gave, where you replace chain and address and it should work fine
its right , bcz i dont change the abi too
ogin = async () => {
Moralis.Web3.authenticate().then(function (user) {
console.log(user.get('ethAddress'))
})
}
async function cptsupply() {
const web3 = await moralis.enable();
ERC20_ABI = [
{
constant: true,
inputs: [],
name: "totalSupply",
outputs: [{ name: "", type: "uint256" }],
payable: false,
stateMutability: "view",
type: "function",
},
];
x = await Moralis.Web3API.native.runContractFunction({
chain: "bsc",
address: "0x28e4f32fa7e842ad0a6e530bb6b4ec03b36d5078",
function_name: "totalSupply",
abi: ERC20_ABI,
})
console.log(x);
}does it work now for you?
it did not show the total supply in console
and one more question i did not use web3 api for showing data … soo why i used
await Moralis.Web3API.native.runContractFunctionif you run the code from here on console: [SOLVED] Calling functions on BSC deployed contract
it should work
web3 instance is needed for Moralis.executeFunction
Moralis.Web3API.native.runContractFunction doesn’t use a web3 instance (like a connection to MetaMask), but both will require to have your server url and app id configured
did you see any errors on console, did that function get executed?
i did not get any error … only i get in console is my connected address ,not get totalsupply …this is my code
<script>
// connect to Moralis server
Moralis.initialize("pfaPMZpSl0COD4qDiZ6ytcu2ePIMaPWI2pSrhTZm");
Moralis.serverURL = "https://4l81fhpvqkit.usemoralis.com:2053/server";
// Login with metamask and get the ethAddress
login = async () => {
Moralis.Web3.authenticate().then(function (user) {
console.log(user.get('ethAddress'))
})
}
async function cptsupply() {
const web3 = await moralis.enable();
ERC20_ABI = [
{
constant: true,
inputs: [],
name: "totalSupply",
outputs: [{ name: "", type: "uint256" }],
payable: false,
stateMutability: "view",
type: "function",
},
];
x = await Moralis.Web3API.native.runContractFunction({
chain: “bsc”,
address: “0x28e4f32fa7e842ad0a6e530bb6b4ec03b36d5078”,
function_name: “totalSupply”,
abi: ERC20_ABI,
})
console.log(x);
}
I executed now this code in console and it works fine:
ERC20_ABI = [
{
constant: true,
inputs: [],
name: "totalSupply",
outputs: [{ name: "", type: "uint256" }],
payable: false,
stateMutability: "view",
type: "function",
},
];
x = await Moralis.Web3API.native.runContractFunction({
chain: "bsc",
address: "0x28e4f32fa7e842ad0a6e530bb6b4ec03b36d5078",
function_name: "totalSupply",
abi: ERC20_ABI,
})
console.log(x);
=> 10000000000000000000000
where do you call that cptsupply function?
1 Like
await is only valid with async function x = await Moralis.Web3API.native.runContractFunction
for this line i have to make a function cptsupply , can u give me your whole code which shows totalsupply in console …
this is my code
<script>
// connect to Moralis server
Moralis.initialize("pfaPMZpSl0COD4qDiZ6ytcu2ePIMaPWI2pSrhTZm");
Moralis.serverURL = "https://4l81fhpvqkit.usemoralis.com:2053/server";
// Login with metamask and get the ethAddress
login = async () => {
Moralis.Web3.authenticate().then(function (user) {
console.log(user.get('ethAddress'))
})
}
async function cptsupply() {
const web3 = await moralis.enable();
ERC20_ABI = [
{
constant: true,
inputs: [],
name: “totalSupply”,
outputs: [{ name: “”, type: “uint256” }],
payable: false,
stateMutability: “view”,
type: “function”,
},
];
x= await Moralis.Web3API.native.runContractFunction({
chain: “bsc”,
address: “0x28e4f32fa7e842ad0a6e530bb6b4ec03b36d5078”,
function_name: “totalSupply”,
abi: ERC20_ABI,
})
cptsupply();
console.log(x);
}
try to paste the code from here in your browser console: [SOLVED] Calling functions on BSC deployed contract